Fix OVN migration workload creation order

Currently workload VMs start before subnet is connected to router.
When DVR is enabled this causes sometimes that one of the VMs is not
able to get metadata.

Closes bug: #1947547

(Manually cherry picked from Neutron d49ce1652d31fb884285ed30e39ec10ef40c864d)

Change-Id: Ifd686d7ff452abd1226fbbc97f499e05102e4596

migration/tripleo_environment/playbooks/roles/resources/create/templates/create-resources.sh.j2

@@ -35,18 +35,18 @@ neutron net-update ovn-migration-net-{{ resource_suffix }} --mtu 1442
 
 openstack subnet create  --network ovn-migration-net-{{ resource_suffix }}  --subnet-range 172.168.199.0/24 ovn-migration-subnet-{{ resource_suffix }}
 
-openstack port create --network ovn-migration-net-{{ resource_suffix }} --security-group ovn-migration-sg-{{ resource_suffix }} ovn-migration-server-port-{{ resource_suffix }}
-
-openstack server create --flavor ovn-migration-{{ resource_suffix }} --image $image_name \
---key-name ovn-migration-{{ resource_suffix }} \
---nic port-id=ovn-migration-server-port-{{ resource_suffix }} ovn-migration-server-{{ resource_suffix }}
-
 openstack router create ovn-migration-router-{{ resource_suffix }}
 
 openstack router set --external-gateway {{ public_network_name }} ovn-migration-router-{{ resource_suffix }}
 
 openstack router add subnet ovn-migration-router-{{ resource_suffix }} ovn-migration-subnet-{{ resource_suffix }}
 
+openstack port create --network ovn-migration-net-{{ resource_suffix }} --security-group ovn-migration-sg-{{ resource_suffix }} ovn-migration-server-port-{{ resource_suffix }}
+
+openstack server create --flavor ovn-migration-{{ resource_suffix }} --image $image_name \
+--key-name ovn-migration-{{ resource_suffix }} \
+--nic port-id=ovn-migration-server-port-{{ resource_suffix }} ovn-migration-server-{{ resource_suffix }}
+
 server_ip=`openstack floating ip create --port ovn-migration-server-port-{{ resource_suffix }} \
 {{ public_network_name }} -c floating_ip_address | grep floating_ip_address \
 | awk '{print $4'}`